Fix Android app randomly hangs

[zabolotnev]

What does the pull request do?

#15807 Fix Android app randomly hangs when switching between apps.

What is the current behavior?

Sometimes after the AvaloniaActivity.OnResume() is called and the application is displayed, it does not call either AvaloniaView.OnVisibilityAggregated or AvaloniaView.OnVisibilityChanged. In this case, ChoreographerTimer does not start. See #15807.

What is the updated/expected behavior with this PR?

Steps to repoduce and test in #15807.

How was the solution implemented (if it's not obvious)?

Fixed resource leak and additional call from AvaloniaActivity.OnResume to AvaloniaView.OnVisibilityChanged. See Additional context in #15807.

Checklist

• Added unit tests (if possible)?
• Added XML documentation to any related classes?
• Consider submitting a PR to https://github.com/AvaloniaUI/avalonia-docs with user documentation

Breaking changes

Obsoletions / Deprecations

Fixed issues

Fixes #15807

[avaloniaui-bot]

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[avaloniaui-bot]

You can test this PR using the following package version. 11.2.999-cibuild0048602-alpha. (feed url: https://nuget-feed-all.avaloniaui.net/v3/index.json) [PRBUILDID]

[maxkatz6]

LGTM